Compiled at 1423 UTC on 5 January 2009
[ The Tracking News | ephemerides | cleared ]
Missing something? Here are 99942 Apophis (2004 MN4) and 144898 2004 VD17. Check the archives for others.
| 0000NNN000 Object | Risk Monitor | A/CC Noted Time & Day UTC | 0000T0000 Year Range | VI # | 000NN00 Prob Cum | T0000 PS Cum | T0000 PS Max | T S | Notes for Latest Risk Assessments |
| 2009 AV | NEODyS | 1433 Jan. 4 | 2010-2085 | 75 | 3.16e-08 | -2.68 | -2.81 | 0 | Based on 10 optical observations (of which 0 are rejected as outliers) from 2009/01/02.541 to 2009/01/03.539. |
| JPL Sentry | 1859 Jan. 3 | 2010-2106 | 209 | 1.1e-07 | -2.45 | -2.59 | 0 | Analysis based on 10 observations spanning .99743 days (2009-Jan-02.54066 to 2009-Jan-03.53809). Diameter approximately 0.905 km. from mean, weighted H=17.9. | |
| Assessment postings were noted by A/CC on 3 Jan. & 4 Jan. - References: MPEC 2009-A27 | |||||||||
| 2009 AL | NEODyS | 1556 Jan. 3 | 2053-2057 | 2 | 1.63e-07 | -5.05 | -5.05 | 0 | Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/01/01.300 to 2009/01/03.171. |
| JPL Sentry | 1556 Jan. 3 | 2049-2106 | 8 | 4.8e-07 | -4.81 | -5.08 | 0 | Analysis based on 25 observations spanning 1.8705 days (2009-Jan-01.29931 to 2009-Jan-03.16982). Diameter approximately 0.160 km. from mean, weighted H=21.6. | |
| Assessment postings were noted by A/CC on 2 Jan. & 3 Jan. - References: MPECs 2009-A14 & 2009-A22 | |||||||||
| 2008 YV32 | NEODyS | 1433 Jan. 4 | 2072-2090 | 6 | 2.12e-06 | -6.58 | -7.03 | 0 | Based on 33 optical observations (of which 0 are rejected as outliers) from 2008/12/31.221 to 2009/01/03.149. |
| JPL Sentry | 1433 Jan. 4 | 2085-2107 | 14 | 7.5e-06 | -6.09 | -6.69 | 0 | Analysis based on 33 observations spanning 2.9281 days (2008-Dec-31.22029 to 2009-Jan-03.14842). Diameter approximately 0.019 km. from mean, weighted H=26.3. | |
| Assessment postings were noted by A/CC on 2 Jan., 3 Jan. & 4 Jan. - References: MPECs 2009-A08, 2009-A22 & 2009-A30 | |||||||||
| 2008 YU32 | NEODyS | 1556 Jan. 3 | 2013-2088 | 48 | 2.56e-07 | -3.37 | -3.79 | 0 | Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/12/31.103 to 2009/01/03.154. |
| JPL Sentry | 1556 Jan. 3 | 2013-2103 | 57 | 4.2e-07 | -3.26 | -3.70 | 0 | Analysis based on 19 observations spanning 3.0513 days (2008-Dec-31.10188 to 2009-Jan-03.15316). Diameter approximately 0.373 km. from mean, weighted H=19.8. | |
| Assessment postings were noted by A/CC on 2 Jan. & 3 Jan. - References: MPECs 2009-A07 & 2009-A22 | |||||||||
| 2008 YF29 | NEODyS | 1433 Jan. 4 | 2090 | 1 | 1.77e-07 | -6.65 | -6.65 | 0 | Based on 42 optical observations (of which 0 are rejected as outliers) from 2008/12/30.250 to 2009/01/03.793. |
| JPL Sentry | 1433 Jan. 4 | R E M O V E D | Risk listing removed at 0950 UTC 4 Jan. | ||||||
| Assessment postings were noted by A/CC on 30 Dec., 31 Dec., 2 Jan., 3 Jan. & 4 Jan. - References: MPECs 2008-Y76, 2008-Y80, 2009-A06, 2009-A22 & 2009-A30 | |||||||||
| 2008 YD3 | NEODyS | 1459 Dec. 23 | 2022 | 1 | 4.9e-10 | -9.27 | -9.27 | 0 | Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/12/22.343 to 2008/12/22.486. |
| JPL Sentry | 2258 Dec. 22 | 2012-2104 | 21 | 4.3e-08 | -7.82 | -8.25 | 0 | Analysis based on 12 observations spanning .14315 days (2008-Dec-22.34245 to 2008-Dec-22.4856). Diameter approximately 0.020 km. from mean, weighted H=26.2. | |
| Assessment postings were noted by A/CC on 22 Dec. & 23 Dec. - References: MPEC 2008-Y40 | |||||||||
| 2008 YC3 | NEODyS | 1556 Jan. 3 | 2084-2090 | 11 | 6.31e-05 | -4.79 | -5.22 | 0 | Based on 33 optical observations (of which 4 are rejected as outliers) from 2008/12/22.254 to 2009/01/03.133. |
| JPL Sentry | 1556 Jan. 3 | 2088-2107 | 19 | 2.0e-04 | -4.32 | -4.87 | 0 | Analysis based on 29 observations spanning 11.879 days (2008-Dec-22.25277 to 2009-Jan-03.13185). Diameter approximately 0.027 km. from mean, weighted H=25.5. | |
| Assessment postings were noted by A/CC on 22 Dec., 23 Dec., 27 Dec., 29 Dec., 30 Dec., 31 Dec. & 3 Jan. - References: MPECs 2008-Y39, 2008-Y56, 2008-Y61, 2008-Y66, 2008-Y80 & 2009-A22 | |||||||||
| 2008 YO2 | JPL Sentry | 2032 Jan. 1 | 2052-2107 | 39 | 6.8e-06 | -5.31 | -5.88 | 0 | Analysis based on 26 observations spanning 1.0020 days (2008-Dec-21.16512 to 2008-Dec-22.16708). Diameter approximately 0.031 km. from mean, weighted H=25.2. |
| NEODyS | 1605 Jan. 1 | 2052-2089 | 7 | 2.1e-06 | -5.78 | -5.91 | 0 | Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/12/21.166 to 2008/12/22.168. | |
| Assessment postings were noted by A/CC on 22 Dec., 23 Dec. & 1 Jan. - References: MPECs 2008-Y34 & 2009-A02 | |||||||||
| 2008 XU2 | NEODyS | 1433 Jan. 4 | 2039 | 1 | 3.01e-07 | -6.64 | -6.64 | 0 | Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/12/06.262 to 2009/01/03.259. |
| JPL Sentry | 1433 Jan. 4 | 2039 | 1 | 2.9e-07 | -6.65 | -6.65 | 0 | Analysis based on 44 observations spanning 27.997 days (2008-Dec-06.2616 to 2009-Jan-03.258608). Diameter approximately 0.026 km. from mean, weighted H=25.6. | |
| Assessment postings were noted by A/CC on 7 Dec., 8 Dec., 10 Dec., 24 Dec., 30 Dec., 31 Dec., 1 Jan. & 4 Jan. - References: MPECs 2008-X55, 2008-X71, 2008-Y50, 2008-Y66, 2008-Y80, 2009-A02 & 2009-A30 | |||||||||
| 2008 XC1 | NEODyS | 2305 Dec. 13 | 2085 | 1 | 1.22e-07 | -6.46 | -6.46 | 0 | Based on 139 optical observations (of which 1 are rejected as outliers) from 2008/12/03.369 to 2008/12/11.334. |
| JPL Sentry | 1456 Dec. 13 | 2085-2088 | 2 | 1.3e-07 | -6.44 | -6.50 | 0 | Analysis based on 138 observations spanning 7.9652 days (2008-Dec-03.36799 to 2008-Dec-11.3332). Diameter approximately 0.063 km. from mean, weighted H=23.7. | |
| Assessment postings were noted by A/CC on 5 Dec., 6 Dec., 7 Dec., 8 Dec., 9 Dec., 10 Dec., 11 Dec., 12 Dec. & 13 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X64, 2008-X70, 2008-X71, 2008-X72, 2008-X79 & 2008-X82 | |||||||||
| 144898 2004 VD17 | NEODyS | 1532 Jan. 4 | 2102-2104 | 2 | 5.64e-08 | -4.91 | -4.91 | 0 | Based on 974 optical observations (of which 4 are rejected as outliers) from 2002/02/16.463 to 2009/01/03.407. |
| An assessment posting was noted by A/CC on 4 Jan. - References: MPEC 2009-A30 | |||||||||
| C L E A R E D | |||||||||
| 2008 YY32 | JPL Sentry | 1433 Jan. 4 | R E M O V E D | Risk listing removed at 1030 UTC 4 Jan. | |||||
| Assessment postings were noted by A/CC on 2 Jan., 3 Jan. & 4 Jan. - References: MPECs 2009-A11, 2009-A22 & 2009-A30 | |||||||||
| 2008 YU30 | NEODyS | 1556 Jan. 3 | R E M O V E D | ||||||
| JPL Sentry | 1556 Jan. 3 | R E M O V E D | Risk listing removed at 1138 UTC 3 Jan. | ||||||
| Assessment postings were noted by A/CC on 1 Jan., 2 Jan. & 3 Jan. - References: MPECs 2008-Y86, 2009-A06, 2009-A22 & 2009-A30 | |||||||||
| 2008 YT30 | JPL Sentry | 1357 Jan. 5 | R E M O V E D | Risk listing removed at 0953 UTC 5 Jan. | |||||
| NEODyS | 1556 Jan. 3 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 1 Jan., 2 Jan., 3 Jan. & 5 Jan. - References: MPECs 2008-Y85, 2009-A06, 2009-A22 & 2009-A31 | |||||||||
| 2008 YH30 | JPL Sentry | 2217 Jan. 2 | R E M O V E D | Risk listing removed at 2205 UTC 2 Jan. | |||||
| Assessment postings were noted by A/CC on 31 Dec. & 2 Jan. - References: MPECs 2008-Y84, 2009-A06 & 2009-A22 | |||||||||
| 2008 YF30 | JPL Sentry | 2217 Jan. 2 | R E M O V E D | Risk listing removed at 2135 UTC 2 Jan. | |||||
| NEODyS | 1414 Jan. 2 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 31 Dec., 1 Jan. & 2 Jan. - References: MPECs 2008-Y82, 2009-A06 & 2009-A22 | |||||||||
| 2008 YE29 | NEODyS | 1556 Jan. 3 | R E M O V E D | ||||||
| JPL Sentry | 1556 Jan. 3 | R E M O V E D | Risk listing removed at 1129 UTC 3 Jan. | ||||||
| Assessment postings were noted by A/CC on 30 Dec., 31 Dec., 2 Jan. & 3 Jan. - References: MPECs 2008-Y75, 2008-Y80, 2009-A06, 2009-A22 & 2009-A30 | |||||||||
| 2008 YB29 | JPL Sentry | 1959 Jan. 1 | R E M O V E D | Risk listing removed at 1949 UTC 1 Jan. | |||||
| Assessment postings were noted by A/CC on 30 Dec. & 1 Jan. - References: MPECs 2008-Y72, 2009-A02, 2009-A06 & 2009-A22 | |||||||||
| 2008 YA29 | JPL Sentry | 1959 Jan. 1 | R E M O V E D | Risk listing removed at 1949 UTC 1 Jan. | |||||
| NEODyS | 1604 Jan. 1 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 30 Dec., 31 Dec. & 1 Jan. - References: MPECs 2008-Y71, 2009-A02, 2009-A06 & 2009-A22 | |||||||||
| 2008 YJ3 | NEODyS | 1536 Dec. 27 | R E M O V E D | ||||||
| JPL Sentry | 1536 Dec. 27 | R E M O V E D | Risk listing removed at 0951 UTC 27 Dec. | ||||||
| Assessment postings were noted by A/CC on 23 Dec., 24 Dec. & 27 Dec. - References: MPECs 2008-Y48, 2008-Y56, 2008-Y66, 2008-Y80, 2009-A06 & 2009-A22 | |||||||||
| 2008 YN2 | JPL Sentry | 1536 Dec. 27 | R E M O V E D | Risk listing removed at 0955 UTC 27 Dec. | |||||
| Assessment postings were noted by A/CC on 22 Dec. & 27 Dec. - References: MPECs 2008-Y33, 2008-Y56, 2008-Y66, 2008-Y80, 2009-A06 & 2009-A30 | |||||||||
| 2008 XQ2 | NEODyS | 1430 Dec. 17 | R E M O V E D | ||||||
| JPL Sentry | 1430 Dec. 17 | R E M O V E D | Risk listing removed at 0950 UTC 17 Dec. | ||||||
| Assessment postings were noted by A/CC on 7 Dec. & 17 Dec. - References: MPECs 2008-X52, 2008-X54, 2008-Y02, 2008-Y66 & 2009-A06 | |||||||||
| 2008 XP2 | JPL Sentry | 1552 Dec. 7 | R E M O V E D | Risk listing removed at 1039 UTC 7 Dec. | |||||
| Assessment postings were noted by A/CC on 6 Dec. & 7 Dec. - References: MPECs 2008-X51, 2008-X54, 2008-X64, 2008-X82, 2008-Y02, 2008-Y50, 2008-Y56 & 2008-Y61 | |||||||||
| 2008 XO2 | JPL Sentry | 1415 Dec. 24 | R E M O V E D | Risk listing removed at 0949 UTC 24 Dec. | |||||
| NEODyS | 1415 Dec. 24 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 6 Dec., 7 Dec., 8 Dec. & 24 Dec. - References: MPECs 2008-X50, 2008-X54, 2008-X64, 2008-Y50, 2008-Y66 & 2009-A22 | |||||||||
| 2008 XB2 | JPL Sentry | 1557 Dec. 6 | R E M O V E D | Risk listing removed at 0956 UTC 6 Dec. | |||||
| Assessment postings were noted by A/CC on 5 Dec. & 6 Dec. - References: MPECs 2008-X44, 2008-X49, 2008-X54, 2008-X70, 2008-X71, 2008-X82, 2008-X87 & 2008-Y02 | |||||||||
| 2008 XM1 | NEODyS | 1552 Dec. 7 | R E M O V E D | ||||||
| JPL Sentry | 1552 Dec. 7 | R E M O V E D | Risk listing removed at 1033 UTC 7 Dec. | ||||||
| Assessment postings were noted by A/CC on 5 Dec., 6 Dec. & 7 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X64, 2008-X70, 2008-X71, 2008-X79, 2008-X82 & 2008-X87 | |||||||||
| 2008 XO | NEODyS | 1357 Dec. 5 | R E M O V E D | ||||||
| JPL Sentry | 1357 Dec. 5 | R E M O V E D | Risk listing removed at 1130 UTC 5 Dec. | ||||||
| Assessment postings were noted by A/CC on 5 Dec. - References: MPECs 2008-X40, 2008-X54 & 2008-X82 | |||||||||
| 2008 XN | NEODyS | 1557 Dec. 6 | R E M O V E D | ||||||
| JPL Sentry | 1557 Dec. 6 | R E M O V E D | Risk listing removed at 1030 UTC 6 Dec. | ||||||
| Assessment postings were noted by A/CC on 5 Dec. & 6 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X70, 2008-Y08, 2008-Y50, 2008-Y56, 2008-Y66 & 2009-A06 | |||||||||
| 2008 WK96 | JPL Sentry | 1415 Dec. 24 | R E M O V E D | Risk listing removed at 0953 UTC 24 Dec. | |||||
| NEODyS | 1415 Dec. 24 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 5 Dec., 6 Dec., 7 Dec., 8 Dec., 13 Dec., 17 Dec. & 24 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X64, 2008-X82, 2008-Y02, 2008-Y50 & 2008-Y80 | |||||||||
| 2008 WY94 | JPL Sentry | 1529 Dec. 30 | R E M O V E D | Risk listing removed at 0951 UTC 30 Dec. | |||||
| NEODyS | 1529 Dec. 30 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 7 Dec., 9 Dec., 11 Dec. & 30 Dec. - References: MPECs 2008-X54, 2008-X70, 2008-X72 & 2008-Y66 | |||||||||
| 2008 WZ13 | NEODyS | 1801 Dec. 7 | R E M O V E D | ||||||
| JPL Sentry | 1552 Dec. 7 | R E M O V E D | Risk listing removed at 0951 UTC 7 Dec. | ||||||
| Assessment postings were noted by A/CC on 5 Dec., 6 Dec. & 7 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-Y50 & 2008-Y66 | |||||||||
| 2008 UW99 | JPL Sentry | 1348 Dec. 8 | R E M O V E D | Risk listing removed at 0950 UTC 8 Dec. | |||||
| An assessment posting was noted by A/CC on 8 Dec. - References: MPEC 2008-X64 | |||||||||
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale
For a list of risk-rated objects currently under observation, see our ephemerides page.
An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" for more information.